Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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![DataBaseMid2021-2.doc [Compatibility Mode] - Word
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SECOND OUENIVAR
The following Data Base shows some sample data values for an extended form of the Zoo and
Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date.
Zoo :
Zno
zi
Visitors :
City
Gaza
Nusirat
Yno
Name
Address
Age
V1
Fuad
Gaza
55
Z2
V2
Rami
Gaza
20
Z3
Gaza
V3
Ahmed
Nusirat
31
V4
Ahmed
Gaza
45
V5
Ali
Rafa
20
Visiting:
Vno
Zno
Z1
Date
V2
11-11-1998
15-10-1999
V1
Z3
11-01-2003
11-01-2003
06-03-1997
V2
Z2
V2
Z3
V1
Z2
V3
Z1
06-031997
V3
Z3
11-11-2005
V4
Z3
11-11-2005
V2
Z2
12-12-2005
Given the following relational Algebra querya
Visitors Þyisitora.Nno = Visiting.VnolIIxna.Znal Visiting) A IIzag [8 City = “Caza' ( Zoo)]1
A- Find the result relation of the above query
B What was the request of the relational algebra query above (make a query text ).
Page 2 of 5
743 words
English (United States)
100%
5:34 PM
O Type here to search
A d>
G ENG
04/06/2021
近](https://content.bartleby.com/qna-images/question/1c9eb336-08df-4ff7-8c94-36561f1bda1a/52f43276-66e0-4853-a1e4-6d39faf2b380/in2ryv_processed.png)
Transcribed Image Text:DataBaseMid2021-2.doc [Compatibility Mode] - Word
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SECOND OUENIVAR
The following Data Base shows some sample data values for an extended form of the Zoo and
Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date.
Zoo :
Zno
zi
Visitors :
City
Gaza
Nusirat
Yno
Name
Address
Age
V1
Fuad
Gaza
55
Z2
V2
Rami
Gaza
20
Z3
Gaza
V3
Ahmed
Nusirat
31
V4
Ahmed
Gaza
45
V5
Ali
Rafa
20
Visiting:
Vno
Zno
Z1
Date
V2
11-11-1998
15-10-1999
V1
Z3
11-01-2003
11-01-2003
06-03-1997
V2
Z2
V2
Z3
V1
Z2
V3
Z1
06-031997
V3
Z3
11-11-2005
V4
Z3
11-11-2005
V2
Z2
12-12-2005
Given the following relational Algebra querya
Visitors Þyisitora.Nno = Visiting.VnolIIxna.Znal Visiting) A IIzag [8 City = “Caza' ( Zoo)]1
A- Find the result relation of the above query
B What was the request of the relational algebra query above (make a query text ).
Page 2 of 5
743 words
English (United States)
100%
5:34 PM
O Type here to search
A d>
G ENG
04/06/2021
近
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